/Engine/Source/Runtime/MovieScene/Public/Channels/MovieSceneChannelData.h
Duplicate a number of keys within this channel data
void DuplicateKeys ( [TArrayView](API\Runtime\Core\Containers\TArrayView)< const [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) > InHandles, [TArrayView](API\Runtime\Core\Containers\TArrayView)< [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) > OutNewHandles )